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gtk2/gtk/gtkcellrenderer.c
Sophie Herold a546ae32d7 Remove all nicks and blurbs from param specs 
Those property features don't seem to be in use anywhere.
They are redundant since the docs cover the same information
and more. They also created unnecessary translation work.

Closes #4904
2022-05-11 18:16:29 +02:00

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/* gtkcellrenderer.c
* Copyright (C) 2000 Red Hat, Inc. Jonathan Blandford
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkcellrenderer.h"
#include "gtkintl.h"
#include "gtkmarshalers.h"
#include "gtkprivate.h"
#include "gtksnapshot.h"
#include "gtkstylecontext.h"
#include "gtktreeprivate.h"
#include "gtktypebuiltins.h"
/**
* GtkCellRenderer:
*
* An object for rendering a single cell
*
* The `GtkCellRenderer` is a base class of a set of objects used for
* rendering a cell to a `cairo_t`. These objects are used primarily by
* the `GtkTreeView` widget, though they aren’t tied to them in any
* specific way. It is worth noting that `GtkCellRenderer` is not a
* `GtkWidget` and cannot be treated as such.
*
* The primary use of a `GtkCellRenderer` is for drawing a certain graphical
* elements on a `cairo_t`. Typically, one cell renderer is used to
* draw many cells on the screen. To this extent, it isn’t expected that a
* CellRenderer keep any permanent state around. Instead, any state is set
* just prior to use using `GObject`s property system. Then, the
* cell is measured using gtk_cell_renderer_get_preferred_size(). Finally, the cell
* is rendered in the correct location using gtk_cell_renderer_snapshot().
*
* There are a number of rules that must be followed when writing a new
* `GtkCellRenderer`. First and foremost, it’s important that a certain set
* of properties will always yield a cell renderer of the same size,
* barring a style change. The `GtkCellRenderer` also has a number of
* generic properties that are expected to be honored by all children.
*
* Beyond merely rendering a cell, cell renderers can optionally
* provide active user interface elements. A cell renderer can be
* “activatable” like `GtkCellRenderer`Toggle,
* which toggles when it gets activated by a mouse click, or it can be
* “editable” like `GtkCellRenderer`Text, which
* allows the user to edit the text using a widget implementing the
* `GtkCellEditable` interface, e.g. `GtkEntry`.
* To make a cell renderer activatable or editable, you have to
* implement the `GtkCellRenderer`Class.activate or
* `GtkCellRenderer`Class.start_editing virtual functions, respectively.
*
* Many properties of `GtkCellRenderer` and its subclasses have a
* corresponding “set” property, e.g. “cell-background-set” corresponds
* to “cell-background”. These “set” properties reflect whether a property
* has been set or not. You should not set them independently.
*/
#define DEBUG_CELL_SIZE_REQUEST 0
static void gtk_cell_renderer_init (GtkCellRenderer *cell);
static void gtk_cell_renderer_class_init (GtkCellRendererClass *class);
static void gtk_cell_renderer_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec);
static void gtk_cell_renderer_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec);
static void set_cell_bg_color (GtkCellRenderer *cell,
GdkRGBA *rgba);
static GtkSizeRequestMode gtk_cell_renderer_real_get_request_mode(GtkCellRenderer *cell);
static void gtk_cell_renderer_real_get_preferred_width (GtkCellRenderer *cell,
GtkWidget *widget,
int *minimum_size,
int *natural_size);
static void gtk_cell_renderer_real_get_preferred_height (GtkCellRenderer *cell,
GtkWidget *widget,
int *minimum_size,
int *natural_size);
static void gtk_cell_renderer_real_get_preferred_height_for_width(GtkCellRenderer *cell,
GtkWidget *widget,
int width,
int *minimum_height,
int *natural_height);
static void gtk_cell_renderer_real_get_preferred_width_for_height(GtkCellRenderer *cell,
GtkWidget *widget,
int height,
int *minimum_width,
int *natural_width);
static void gtk_cell_renderer_real_get_aligned_area (GtkCellRenderer *cell,
GtkWidget *widget,
GtkCellRendererState flags,
const GdkRectangle *cell_area,
GdkRectangle *aligned_area);
struct _GtkCellRendererPrivate
{
float xalign;
float yalign;
int width;
int height;
guint16 xpad;
guint16 ypad;
guint mode : 2;
guint visible : 1;
guint is_expander : 1;
guint is_expanded : 1;
guint cell_background_set : 1;
guint sensitive : 1;
guint editing : 1;
GdkRGBA cell_background;
};
enum {
PROP_0,
PROP_MODE,
PROP_VISIBLE,
PROP_SENSITIVE,
PROP_XALIGN,
PROP_YALIGN,
PROP_XPAD,
PROP_YPAD,
PROP_WIDTH,
PROP_HEIGHT,
PROP_IS_EXPANDER,
PROP_IS_EXPANDED,
PROP_CELL_BACKGROUND,
PROP_CELL_BACKGROUND_RGBA,
PROP_CELL_BACKGROUND_SET,
PROP_EDITING
};
/* Signal IDs */
enum {
EDITING_CANCELED,
EDITING_STARTED,
LAST_SIGNAL
};
static int GtkCellRenderer_private_offset;
static guint cell_renderer_signals[LAST_SIGNAL] = { 0 };
static inline gpointer
gtk_cell_renderer_get_instance_private (GtkCellRenderer *self)
{
return (G_STRUCT_MEMBER_P (self, GtkCellRenderer_private_offset));
}
static void
gtk_cell_renderer_init (GtkCellRenderer *cell)
{
GtkCellRendererPrivate *priv;
cell->priv = gtk_cell_renderer_get_instance_private (cell);
priv = cell->priv;
priv->mode = GTK_CELL_RENDERER_MODE_INERT;
priv->visible = TRUE;
priv->width = -1;
priv->height = -1;
priv->xalign = 0.5;
priv->yalign = 0.5;
priv->xpad = 0;
priv->ypad = 0;
priv->sensitive = TRUE;
priv->is_expander = FALSE;
priv->is_expanded = FALSE;
priv->editing = FALSE;
}
static void
gtk_cell_renderer_class_init (GtkCellRendererClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
object_class->get_property = gtk_cell_renderer_get_property;
object_class->set_property = gtk_cell_renderer_set_property;
class->snapshot = NULL;
class->get_request_mode = gtk_cell_renderer_real_get_request_mode;
class->get_preferred_width = gtk_cell_renderer_real_get_preferred_width;
class->get_preferred_height = gtk_cell_renderer_real_get_preferred_height;
class->get_preferred_width_for_height = gtk_cell_renderer_real_get_preferred_width_for_height;
class->get_preferred_height_for_width = gtk_cell_renderer_real_get_preferred_height_for_width;
class->get_aligned_area = gtk_cell_renderer_real_get_aligned_area;
/**
* GtkCellRenderer::editing-canceled:
* @renderer: the object which received the signal
*
* This signal gets emitted when the user cancels the process of editing a
* cell. For example, an editable cell renderer could be written to cancel
* editing when the user presses Escape.
*
* See also: gtk_cell_renderer_stop_editing().
*/
cell_renderer_signals[EDITING_CANCELED] =
g_signal_new (I_("editing-canceled"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkCellRendererClass, editing_canceled),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
/**
* GtkCellRenderer::editing-started:
* @renderer: the object which received the signal
* @editable: the `GtkCellEditable`
* @path: the path identifying the edited cell
*
* This signal gets emitted when a cell starts to be edited.
* The intended use of this signal is to do special setup
* on @editable, e.g. adding a `GtkEntryCompletion` or setting
* up additional columns in a `GtkComboBox`.
*
* See gtk_cell_editable_start_editing() for information on the lifecycle of
* the @editable and a way to do setup that doesn’t depend on the @renderer.
*
* Note that GTK doesn't guarantee that cell renderers will
* continue to use the same kind of widget for editing in future
* releases, therefore you should check the type of @editable
* before doing any specific setup, as in the following example:
* |[<!-- language="C" -->
* static void
* text_editing_started (GtkCellRenderer *cell,
* GtkCellEditable *editable,
* const char *path,
* gpointer data)
* {
* if (GTK_IS_ENTRY (editable))
* {
* GtkEntry *entry = GTK_ENTRY (editable);
*
* // ... create a GtkEntryCompletion
*
* gtk_entry_set_completion (entry, completion);
* }
* }
* ]|
*/
cell_renderer_signals[EDITING_STARTED] =
g_signal_new (I_("editing-started"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkCellRendererClass, editing_started),
NULL, NULL,
_gtk_marshal_VOID__OBJECT_STRING,
G_TYPE_NONE, 2,
GTK_TYPE_CELL_EDITABLE,
G_TYPE_STRING);
g_signal_set_va_marshaller (cell_renderer_signals[EDITING_STARTED],
G_TYPE_FROM_CLASS (object_class),
_gtk_marshal_VOID__OBJECT_STRINGv);
g_object_class_install_property (object_class,
PROP_MODE,
g_param_spec_enum ("mode", NULL, NULL,
GTK_TYPE_CELL_RENDERER_MODE,
GTK_CELL_RENDERER_MODE_INERT,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (object_class,
PROP_VISIBLE,
g_param_spec_boolean ("visible", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (object_class,
PROP_SENSITIVE,
g_param_spec_boolean ("sensitive", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (object_class,
PROP_XALIGN,
g_param_spec_float ("xalign", NULL, NULL,
0.0,
1.0,
0.5,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (object_class,
PROP_YALIGN,
g_param_spec_float ("yalign", NULL, NULL,
0.0,
1.0,
0.5,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (object_class,
PROP_XPAD,
g_param_spec_uint ("xpad", NULL, NULL,
0,
G_MAXUINT,
0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (object_class,
PROP_YPAD,
g_param_spec_uint ("ypad", NULL, NULL,
0,
G_MAXUINT,
0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (object_class,
PROP_WIDTH,
g_param_spec_int ("width", NULL, NULL,
-1,
G_MAXINT,
-1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (object_class,
PROP_HEIGHT,
g_param_spec_int ("height", NULL, NULL,
-1,
G_MAXINT,
-1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (object_class,
PROP_IS_EXPANDER,
g_param_spec_boolean ("is-expander", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (object_class,
PROP_IS_EXPANDED,
g_param_spec_boolean ("is-expanded", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (object_class,
PROP_CELL_BACKGROUND,
g_param_spec_string ("cell-background", NULL, NULL,
NULL,
GTK_PARAM_WRITABLE));
/**
* GtkCellRenderer:cell-background-rgba:
*
* Cell background as a `GdkRGBA`
*/
g_object_class_install_property (object_class,
PROP_CELL_BACKGROUND_RGBA,
g_param_spec_boxed ("cell-background-rgba", NULL, NULL,
GDK_TYPE_RGBA,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_EDITING,
g_param_spec_boolean ("editing", NULL, NULL,
FALSE,
GTK_PARAM_READABLE));
#define ADD_SET_PROP(propname, propval, nick, blurb) g_object_class_install_property (object_class, propval, g_param_spec_boolean (propname, nick, blurb, FALSE, GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY))
ADD_SET_PROP ("cell-background-set", PROP_CELL_BACKGROUND_SET, NULL, NULL);
if (GtkCellRenderer_private_offset != 0)
g_type_class_adjust_private_offset (class, &GtkCellRenderer_private_offset);
}
GType
gtk_cell_renderer_get_type (void)
{
static GType cell_renderer_type = 0;
if (G_UNLIKELY (cell_renderer_type == 0))
{
const GTypeInfo cell_renderer_info =
{
sizeof (GtkCellRendererClass),
NULL,
NULL,
(GClassInitFunc) gtk_cell_renderer_class_init,
NULL, /* class_finalize */
NULL, /* class_init */
sizeof (GtkWidget),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_cell_renderer_init,
NULL, /* value_table */
};
cell_renderer_type = g_type_register_static (G_TYPE_INITIALLY_UNOWNED, "GtkCellRenderer",
&cell_renderer_info, G_TYPE_FLAG_ABSTRACT);
GtkCellRenderer_private_offset =
g_type_add_instance_private (cell_renderer_type, sizeof (GtkCellRendererPrivate));
}
return cell_renderer_type;
}
static void
gtk_cell_renderer_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec)
{
GtkCellRenderer *cell = GTK_CELL_RENDERER (object);
GtkCellRendererPrivate *priv = cell->priv;
switch (param_id)
{
case PROP_MODE:
g_value_set_enum (value, priv->mode);
break;
case PROP_VISIBLE:
g_value_set_boolean (value, priv->visible);
break;
case PROP_SENSITIVE:
g_value_set_boolean (value, priv->sensitive);
break;
case PROP_EDITING:
g_value_set_boolean (value, priv->editing);
break;
case PROP_XALIGN:
g_value_set_float (value, priv->xalign);
break;
case PROP_YALIGN:
g_value_set_float (value, priv->yalign);
break;
case PROP_XPAD:
g_value_set_uint (value, priv->xpad);
break;
case PROP_YPAD:
g_value_set_uint (value, priv->ypad);
break;
case PROP_WIDTH:
g_value_set_int (value, priv->width);
break;
case PROP_HEIGHT:
g_value_set_int (value, priv->height);
break;
case PROP_IS_EXPANDER:
g_value_set_boolean (value, priv->is_expander);
break;
case PROP_IS_EXPANDED:
g_value_set_boolean (value, priv->is_expanded);
break;
case PROP_CELL_BACKGROUND_RGBA:
g_value_set_boxed (value, &priv->cell_background);
break;
case PROP_CELL_BACKGROUND_SET:
g_value_set_boolean (value, priv->cell_background_set);
break;
case PROP_CELL_BACKGROUND:
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
break;
}
}
static void
gtk_cell_renderer_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec)
{
GtkCellRenderer *cell = GTK_CELL_RENDERER (object);
GtkCellRendererPrivate *priv = cell->priv;
switch (param_id)
{
case PROP_MODE:
if (priv->mode != g_value_get_enum (value))
{
priv->mode = g_value_get_enum (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_VISIBLE:
if (priv->visible != g_value_get_boolean (value))
{
priv->visible = g_value_get_boolean (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_SENSITIVE:
if (priv->sensitive != g_value_get_boolean (value))
{
priv->sensitive = g_value_get_boolean (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_XALIGN:
if (priv->xalign != g_value_get_float (value))
{
priv->xalign = g_value_get_float (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_YALIGN:
if (priv->yalign != g_value_get_float (value))
{
priv->yalign = g_value_get_float (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_XPAD:
if (priv->xpad != g_value_get_uint (value))
{
priv->xpad = g_value_get_uint (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_YPAD:
if (priv->ypad != g_value_get_uint (value))
{
priv->ypad = g_value_get_uint (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_WIDTH:
if (priv->width != g_value_get_int (value))
{
priv->width = g_value_get_int (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_HEIGHT:
if (priv->height != g_value_get_int (value))
{
priv->height = g_value_get_int (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_IS_EXPANDER:
if (priv->is_expander != g_value_get_boolean (value))
{
priv->is_expander = g_value_get_boolean (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_IS_EXPANDED:
if (priv->is_expanded != g_value_get_boolean (value))
{
priv->is_expanded = g_value_get_boolean (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_CELL_BACKGROUND:
{
GdkRGBA rgba;
if (!g_value_get_string (value))
set_cell_bg_color (cell, NULL);
else if (gdk_rgba_parse (&rgba, g_value_get_string (value)))
set_cell_bg_color (cell, &rgba);
else
g_warning ("Don't know color '%s'", g_value_get_string (value));
g_object_notify (object, "cell-background");
}
break;
case PROP_CELL_BACKGROUND_RGBA:
set_cell_bg_color (cell, g_value_get_boxed (value));
break;
case PROP_CELL_BACKGROUND_SET:
if (priv->cell_background_set != g_value_get_boolean (value))
{
priv->cell_background_set = g_value_get_boolean (value);
g_object_notify (object, "cell-background-set");
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
break;
}
}
static void
set_cell_bg_color (GtkCellRenderer *cell,
GdkRGBA *rgba)
{
GtkCellRendererPrivate *priv = cell->priv;
if (rgba)
{
if (!priv->cell_background_set)
{
priv->cell_background_set = TRUE;
g_object_notify (G_OBJECT (cell), "cell-background-set");
}
priv->cell_background = *rgba;
}
else
{
if (priv->cell_background_set)
{
priv->cell_background_set = FALSE;
g_object_notify (G_OBJECT (cell), "cell-background-set");
}
}
g_object_notify (G_OBJECT (cell), "cell-background-rgba");
}
/**
* gtk_cell_renderer_snapshot:
* @cell: a `GtkCellRenderer`
* @snapshot: a `GtkSnapshot` to draw to
* @widget: the widget owning @window
* @background_area: entire cell area (including tree expanders and maybe
* padding on the sides)
* @cell_area: area normally rendered by a cell renderer
* @flags: flags that affect rendering
*
* Invokes the virtual render function of the `GtkCellRenderer`. The three
* passed-in rectangles are areas in @cr. Most renderers will draw within
* @cell_area; the xalign, yalign, xpad, and ypad fields of the `GtkCellRenderer`
* should be honored with respect to @cell_area. @background_area includes the
* blank space around the cell, and also the area containing the tree expander;
* so the @background_area rectangles for all cells tile to cover the entire
* @window.
**/
void
gtk_cell_renderer_snapshot (GtkCellRenderer *cell,
GtkSnapshot *snapshot,
GtkWidget *widget,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags)
{
gboolean selected = FALSE;
GtkCellRendererPrivate *priv = cell->priv;
GtkStyleContext *context;
GtkStateFlags state;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (GTK_CELL_RENDERER_GET_CLASS (cell)->snapshot != NULL);
g_return_if_fail (snapshot != NULL);
selected = (flags & GTK_CELL_RENDERER_SELECTED) == GTK_CELL_RENDERER_SELECTED;
gtk_snapshot_push_debug (snapshot, "%s", G_OBJECT_TYPE_NAME (cell));
if (priv->cell_background_set && !selected)
{
gtk_snapshot_append_color (snapshot,
&priv->cell_background,
&GRAPHENE_RECT_INIT (
background_area->x, background_area->y,
background_area->width, background_area->height
));
}
gtk_snapshot_push_clip (snapshot,
&GRAPHENE_RECT_INIT (
background_area->x, background_area->y,
background_area->width, background_area->height
));
context = gtk_widget_get_style_context (widget);
gtk_style_context_save (context);
gtk_style_context_add_class (context, "cell");
state = gtk_cell_renderer_get_state (cell, widget, flags);
gtk_style_context_set_state (context, state);
GTK_CELL_RENDERER_GET_CLASS (cell)->snapshot (cell,
snapshot,
widget,
background_area,
cell_area,
flags);
gtk_style_context_restore (context);
gtk_snapshot_pop (snapshot);
gtk_snapshot_pop (snapshot);
}
/**
* gtk_cell_renderer_activate:
* @cell: a `GtkCellRenderer`
* @event: a `GdkEvent`
* @widget: widget that received the event
* @path: widget-dependent string representation of the event location;
* e.g. for `GtkTreeView`, a string representation of `GtkTreePath`
* @background_area: background area as passed to gtk_cell_renderer_render()
* @cell_area: cell area as passed to gtk_cell_renderer_render()
* @flags: render flags
*
* Passes an activate event to the cell renderer for possible processing.
* Some cell renderers may use events; for example, `GtkCellRendererToggle`
* toggles when it gets a mouse click.
*
* Returns: %TRUE if the event was consumed/handled
**/
gboolean
gtk_cell_renderer_activate (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const char *path,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags)
{
GtkCellRendererPrivate *priv;
g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell), FALSE);
priv = cell->priv;
if (priv->mode != GTK_CELL_RENDERER_MODE_ACTIVATABLE)
return FALSE;
if (GTK_CELL_RENDERER_GET_CLASS (cell)->activate == NULL)
return FALSE;
return GTK_CELL_RENDERER_GET_CLASS (cell)->activate (cell,
event,
widget,
path,
(GdkRectangle *) background_area,
(GdkRectangle *) cell_area,
flags);
}
/**
* gtk_cell_renderer_start_editing:
* @cell: a `GtkCellRenderer`
* @event: (nullable): a `GdkEvent`
* @widget: widget that received the event
* @path: widget-dependent string representation of the event location;
* e.g. for `GtkTreeView`, a string representation of `GtkTreePath`
* @background_area: background area as passed to gtk_cell_renderer_render()
* @cell_area: cell area as passed to gtk_cell_renderer_render()
* @flags: render flags
*
* Starts editing the contents of this @cell, through a new `GtkCellEditable`
* widget created by the `GtkCellRenderer`Class.start_editing virtual function.
*
* Returns: (nullable) (transfer none): A new `GtkCellEditable` for editing this
* @cell, or %NULL if editing is not possible
**/
GtkCellEditable *
gtk_cell_renderer_start_editing (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
const char *path,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags)
{
GtkCellRendererPrivate *priv;
GtkCellEditable *editable;
g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell), NULL);
priv = cell->priv;
if (priv->mode != GTK_CELL_RENDERER_MODE_EDITABLE)
return NULL;
if (GTK_CELL_RENDERER_GET_CLASS (cell)->start_editing == NULL)
return NULL;
editable = GTK_CELL_RENDERER_GET_CLASS (cell)->start_editing (cell,
event,
widget,
path,
(GdkRectangle *) background_area,
(GdkRectangle *) cell_area,
flags);
if (editable == NULL)
return NULL;
gtk_widget_add_css_class (GTK_WIDGET (editable), "cell");
g_signal_emit (cell,
cell_renderer_signals[EDITING_STARTED], 0,
editable, path);
priv->editing = TRUE;
return editable;
}
/**
* gtk_cell_renderer_set_fixed_size:
* @cell: A `GtkCellRenderer`
* @width: the width of the cell renderer, or -1
* @height: the height of the cell renderer, or -1
*
* Sets the renderer size to be explicit, independent of the properties set.
**/
void
gtk_cell_renderer_set_fixed_size (GtkCellRenderer *cell,
int width,
int height)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (width >= -1 && height >= -1);
priv = cell->priv;
if ((width != priv->width) || (height != priv->height))
{
g_object_freeze_notify (G_OBJECT (cell));
if (width != priv->width)
{
priv->width = width;
g_object_notify (G_OBJECT (cell), "width");
}
if (height != priv->height)
{
priv->height = height;
g_object_notify (G_OBJECT (cell), "height");
}
g_object_thaw_notify (G_OBJECT (cell));
}
}
/**
* gtk_cell_renderer_get_fixed_size:
* @cell: A `GtkCellRenderer`
* @width: (out) (optional): location to fill in with the fixed width of the cell
* @height: (out) (optional): location to fill in with the fixed height of the cell
*
* Fills in @width and @height with the appropriate size of @cell.
*/
void
gtk_cell_renderer_get_fixed_size (GtkCellRenderer *cell,
int *width,
int *height)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
priv = cell->priv;
if (width)
*width = priv->width;
if (height)
*height = priv->height;
}
/**
* gtk_cell_renderer_set_alignment:
* @cell: A `GtkCellRenderer`
* @xalign: the x alignment of the cell renderer
* @yalign: the y alignment of the cell renderer
*
* Sets the renderer’s alignment within its available space.
**/
void
gtk_cell_renderer_set_alignment (GtkCellRenderer *cell,
float xalign,
float yalign)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (xalign >= 0.0 && xalign <= 1.0);
g_return_if_fail (yalign >= 0.0 && yalign <= 1.0);
priv = cell->priv;
if ((xalign != priv->xalign) || (yalign != priv->yalign))
{
g_object_freeze_notify (G_OBJECT (cell));
if (xalign != priv->xalign)
{
priv->xalign = xalign;
g_object_notify (G_OBJECT (cell), "xalign");
}
if (yalign != priv->yalign)
{
priv->yalign = yalign;
g_object_notify (G_OBJECT (cell), "yalign");
}
g_object_thaw_notify (G_OBJECT (cell));
}
}
/**
* gtk_cell_renderer_get_alignment:
* @cell: A `GtkCellRenderer`
* @xalign: (out) (optional): location to fill in with the x alignment of the cell
* @yalign: (out) (optional): location to fill in with the y alignment of the cell
*
* Fills in @xalign and @yalign with the appropriate values of @cell.
*/
void
gtk_cell_renderer_get_alignment (GtkCellRenderer *cell,
float *xalign,
float *yalign)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
priv = cell->priv;
if (xalign)
*xalign = priv->xalign;
if (yalign)
*yalign = priv->yalign;
}
/**
* gtk_cell_renderer_set_padding:
* @cell: A `GtkCellRenderer`
* @xpad: the x padding of the cell renderer
* @ypad: the y padding of the cell renderer
*
* Sets the renderer’s padding.
**/
void
gtk_cell_renderer_set_padding (GtkCellRenderer *cell,
int xpad,
int ypad)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (xpad >= 0 && ypad >= 0);
priv = cell->priv;
if ((xpad != priv->xpad) || (ypad != priv->ypad))
{
g_object_freeze_notify (G_OBJECT (cell));
if (xpad != priv->xpad)
{
priv->xpad = xpad;
g_object_notify (G_OBJECT (cell), "xpad");
}
if (ypad != priv->ypad)
{
priv->ypad = ypad;
g_object_notify (G_OBJECT (cell), "ypad");
}
g_object_thaw_notify (G_OBJECT (cell));
}
}
/**
* gtk_cell_renderer_get_padding:
* @cell: A `GtkCellRenderer`
* @xpad: (out) (optional): location to fill in with the x padding of the cell
* @ypad: (out) (optional): location to fill in with the y padding of the cell
*
* Fills in @xpad and @ypad with the appropriate values of @cell.
*/
void
gtk_cell_renderer_get_padding (GtkCellRenderer *cell,
int *xpad,
int *ypad)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
priv = cell->priv;
if (xpad)
*xpad = priv->xpad;
if (ypad)
*ypad = priv->ypad;
}
/**
* gtk_cell_renderer_set_visible:
* @cell: A `GtkCellRenderer`
* @visible: the visibility of the cell
*
* Sets the cell renderer’s visibility.
**/
void
gtk_cell_renderer_set_visible (GtkCellRenderer *cell,
gboolean visible)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
priv = cell->priv;
if (priv->visible != visible)
{
priv->visible = visible ? TRUE : FALSE;
g_object_notify (G_OBJECT (cell), "visible");
}
}
/**
* gtk_cell_renderer_get_visible:
* @cell: A `GtkCellRenderer`
*
* Returns the cell renderer’s visibility.
*
* Returns: %TRUE if the cell renderer is visible
*/
gboolean
gtk_cell_renderer_get_visible (GtkCellRenderer *cell)
{
g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell), FALSE);
return cell->priv->visible;
}
/**
* gtk_cell_renderer_set_sensitive:
* @cell: A `GtkCellRenderer`
* @sensitive: the sensitivity of the cell
*
* Sets the cell renderer’s sensitivity.
**/
void
gtk_cell_renderer_set_sensitive (GtkCellRenderer *cell,
gboolean sensitive)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
priv = cell->priv;
if (priv->sensitive != sensitive)
{
priv->sensitive = sensitive ? TRUE : FALSE;
g_object_notify (G_OBJECT (cell), "sensitive");
}
}
/**
* gtk_cell_renderer_get_sensitive:
* @cell: A `GtkCellRenderer`
*
* Returns the cell renderer’s sensitivity.
*
* Returns: %TRUE if the cell renderer is sensitive
*/
gboolean
gtk_cell_renderer_get_sensitive (GtkCellRenderer *cell)
{
g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell), FALSE);
return cell->priv->sensitive;
}
/**
* gtk_cell_renderer_is_activatable:
* @cell: A `GtkCellRenderer`
*
* Checks whether the cell renderer can do something when activated.
*
* Returns: %TRUE if the cell renderer can do anything when activated
*/
gboolean
gtk_cell_renderer_is_activatable (GtkCellRenderer *cell)
{
GtkCellRendererPrivate *priv;
g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell), FALSE);
priv = cell->priv;
return (priv->visible &&
(priv->mode == GTK_CELL_RENDERER_MODE_EDITABLE ||
priv->mode == GTK_CELL_RENDERER_MODE_ACTIVATABLE));
}
/**
* gtk_cell_renderer_stop_editing:
* @cell: A `GtkCellRenderer`
* @canceled: %TRUE if the editing has been canceled
*
* Informs the cell renderer that the editing is stopped.
* If @canceled is %TRUE, the cell renderer will emit the
* `GtkCellRenderer`::editing-canceled signal.
*
* This function should be called by cell renderer implementations
* in response to the `GtkCellEditable::editing-done` signal of
* `GtkCellEditable`.
**/
void
gtk_cell_renderer_stop_editing (GtkCellRenderer *cell,
gboolean canceled)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
priv = cell->priv;
if (priv->editing)
{
priv->editing = FALSE;
if (canceled)
g_signal_emit (cell, cell_renderer_signals[EDITING_CANCELED], 0);
}
}
static void
gtk_cell_renderer_real_get_preferred_size (GtkCellRenderer *cell,
GtkWidget *widget,
GtkOrientation orientation,
int *minimum_size,
int *natural_size)
{
GtkRequisition min_req;
min_req.width = 0;
min_req.height = 0;
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (minimum_size)
*minimum_size = min_req.width;
if (natural_size)
*natural_size = min_req.width;
}
else
{
if (minimum_size)
*minimum_size = min_req.height;
if (natural_size)
*natural_size = min_req.height;
}
}
static GtkSizeRequestMode
gtk_cell_renderer_real_get_request_mode (GtkCellRenderer *cell)
{
/* By default cell renderers are height-for-width. */
return GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
}
static void
gtk_cell_renderer_real_get_preferred_width (GtkCellRenderer *cell,
GtkWidget *widget,
int *minimum_size,
int *natural_size)
{
gtk_cell_renderer_real_get_preferred_size (cell, widget, GTK_ORIENTATION_HORIZONTAL,
minimum_size, natural_size);
}
static void
gtk_cell_renderer_real_get_preferred_height (GtkCellRenderer *cell,
GtkWidget *widget,
int *minimum_size,
int *natural_size)
{
gtk_cell_renderer_real_get_preferred_size (cell, widget, GTK_ORIENTATION_VERTICAL,
minimum_size, natural_size);
}
static void
gtk_cell_renderer_real_get_preferred_height_for_width (GtkCellRenderer *cell,
GtkWidget *widget,
int width,
int *minimum_height,
int *natural_height)
{
gtk_cell_renderer_get_preferred_height (cell, widget, minimum_height, natural_height);
}
static void
gtk_cell_renderer_real_get_preferred_width_for_height (GtkCellRenderer *cell,
GtkWidget *widget,
int height,
int *minimum_width,
int *natural_width)
{
gtk_cell_renderer_get_preferred_width (cell, widget, minimum_width, natural_width);
}
/* Default implementation assumes that a cell renderer will never use more
* space than its natural size (this is fine for toggles and pixbufs etc
* but needs to be overridden from wrapping/ellipsizing text renderers) */
static void
gtk_cell_renderer_real_get_aligned_area (GtkCellRenderer *cell,
GtkWidget *widget,
GtkCellRendererState flags,
const GdkRectangle *cell_area,
GdkRectangle *aligned_area)
{
int opposite_size, x_offset, y_offset;
int natural_size;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (cell_area != NULL);
g_return_if_fail (aligned_area != NULL);
*aligned_area = *cell_area;
/* Trim up the aligned size */
if (gtk_cell_renderer_get_request_mode (cell) == GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH)
{
gtk_cell_renderer_get_preferred_width (cell, widget,
NULL, &natural_size);
aligned_area->width = MIN (aligned_area->width, natural_size);
gtk_cell_renderer_get_preferred_height_for_width (cell, widget,
aligned_area->width,
NULL, &opposite_size);
aligned_area->height = MIN (opposite_size, aligned_area->height);
}
else
{
gtk_cell_renderer_get_preferred_height (cell, widget,
NULL, &natural_size);
aligned_area->height = MIN (aligned_area->width, natural_size);
gtk_cell_renderer_get_preferred_width_for_height (cell, widget,
aligned_area->height,
NULL, &opposite_size);
aligned_area->width = MIN (opposite_size, aligned_area->width);
}
/* offset the cell position */
_gtk_cell_renderer_calc_offset (cell, cell_area,
gtk_widget_get_direction (widget),
aligned_area->width,
aligned_area->height,
&x_offset, &y_offset);
aligned_area->x += x_offset;
aligned_area->y += y_offset;
}
/* An internal convenience function for some containers to peek at the
* cell alignment in a target allocation (used to draw focus and align
* cells in the icon view).
*
* Note this is only a trivial “align * (allocation - request)” operation.
*/
void
_gtk_cell_renderer_calc_offset (GtkCellRenderer *cell,
const GdkRectangle *cell_area,
GtkTextDirection direction,
int width,
int height,
int *x_offset,
int *y_offset)
{
GtkCellRendererPrivate *priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (cell_area != NULL);
g_return_if_fail (x_offset || y_offset);
priv = cell->priv;
if (x_offset)
{
*x_offset = (((direction == GTK_TEXT_DIR_RTL) ?
(1.0 - priv->xalign) : priv->xalign) *
(cell_area->width - width));
*x_offset = MAX (*x_offset, 0);
}
if (y_offset)
{
*y_offset = (priv->yalign *
(cell_area->height - height));
*y_offset = MAX (*y_offset, 0);
}
}
/**
* gtk_cell_renderer_get_request_mode:
* @cell: a `GtkCellRenderer` instance
*
* Gets whether the cell renderer prefers a height-for-width layout
* or a width-for-height layout.
*
* Returns: The `GtkSizeRequestMode` preferred by this renderer.
*/
GtkSizeRequestMode
gtk_cell_renderer_get_request_mode (GtkCellRenderer *cell)
{
g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell), FALSE);
return GTK_CELL_RENDERER_GET_CLASS (cell)->get_request_mode (cell);
}
/**
* gtk_cell_renderer_get_preferred_width:
* @cell: a `GtkCellRenderer` instance
* @widget: the `GtkWidget` this cell will be rendering to
* @minimum_size: (out) (optional): location to store the minimum size
* @natural_size: (out) (optional): location to store the natural size
*
* Retrieves a renderer’s natural size when rendered to @widget.
*/
void
gtk_cell_renderer_get_preferred_width (GtkCellRenderer *cell,
GtkWidget *widget,
int *minimum_size,
int *natural_size)
{
GtkCellRendererClass *klass;
int width;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (NULL != minimum_size || NULL != natural_size);
gtk_cell_renderer_get_fixed_size (GTK_CELL_RENDERER (cell), &width, NULL);
if (width < 0)
{
klass = GTK_CELL_RENDERER_GET_CLASS (cell);
klass->get_preferred_width (cell, widget, minimum_size, natural_size);
}
else
{
if (minimum_size)
*minimum_size = width;
if (natural_size)
*natural_size = width;
}
#if DEBUG_CELL_SIZE_REQUEST
g_message ("%s returning minimum width: %d and natural width: %d",
G_OBJECT_TYPE_NAME (cell),
minimum_size ? *minimum_size : 20000,
natural_size ? *natural_size : 20000);
#endif
}
/**
* gtk_cell_renderer_get_preferred_height:
* @cell: a `GtkCellRenderer` instance
* @widget: the `GtkWidget` this cell will be rendering to
* @minimum_size: (out) (optional): location to store the minimum size
* @natural_size: (out) (optional): location to store the natural size
*
* Retrieves a renderer’s natural size when rendered to @widget.
*/
void
gtk_cell_renderer_get_preferred_height (GtkCellRenderer *cell,
GtkWidget *widget,
int *minimum_size,
int *natural_size)
{
GtkCellRendererClass *klass;
int height;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (NULL != minimum_size || NULL != natural_size);
gtk_cell_renderer_get_fixed_size (GTK_CELL_RENDERER (cell), NULL, &height);
if (height < 0)
{
klass = GTK_CELL_RENDERER_GET_CLASS (cell);
klass->get_preferred_height (cell, widget, minimum_size, natural_size);
}
else
{
if (minimum_size)
*minimum_size = height;
if (natural_size)
*natural_size = height;
}
#if DEBUG_CELL_SIZE_REQUEST
g_message ("%s returning minimum height: %d and natural height: %d",
G_OBJECT_TYPE_NAME (cell),
minimum_size ? *minimum_size : 20000,
natural_size ? *natural_size : 20000);
#endif
}
/**
* gtk_cell_renderer_get_preferred_width_for_height:
* @cell: a `GtkCellRenderer` instance
* @widget: the `GtkWidget` this cell will be rendering to
* @height: the size which is available for allocation
* @minimum_width: (out) (optional): location for storing the minimum size
* @natural_width: (out) (optional): location for storing the preferred size
*
* Retrieves a cell renderers’s minimum and natural width if it were rendered to
* @widget with the specified @height.
*/
void
gtk_cell_renderer_get_preferred_width_for_height (GtkCellRenderer *cell,
GtkWidget *widget,
int height,
int *minimum_width,
int *natural_width)
{
GtkCellRendererClass *klass;
int width;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (NULL != minimum_width || NULL != natural_width);
gtk_cell_renderer_get_fixed_size (GTK_CELL_RENDERER (cell), &width, NULL);
if (width < 0)
{
klass = GTK_CELL_RENDERER_GET_CLASS (cell);
klass->get_preferred_width_for_height (cell, widget, height, minimum_width, natural_width);
}
else
{
if (minimum_width)
*minimum_width = width;
if (natural_width)
*natural_width = width;
}
#if DEBUG_CELL_SIZE_REQUEST
g_message ("%s width for height: %d is minimum %d and natural: %d",
G_OBJECT_TYPE_NAME (cell), height,
minimum_width ? *minimum_width : 20000,
natural_width ? *natural_width : 20000);
#endif
}
/**
* gtk_cell_renderer_get_preferred_height_for_width:
* @cell: a `GtkCellRenderer` instance
* @widget: the `GtkWidget` this cell will be rendering to
* @width: the size which is available for allocation
* @minimum_height: (out) (optional): location for storing the minimum size
* @natural_height: (out) (optional): location for storing the preferred size
*
* Retrieves a cell renderers’s minimum and natural height if it were rendered to
* @widget with the specified @width.
*/
void
gtk_cell_renderer_get_preferred_height_for_width (GtkCellRenderer *cell,
GtkWidget *widget,
int width,
int *minimum_height,
int *natural_height)
{
GtkCellRendererClass *klass;
int height;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (NULL != minimum_height || NULL != natural_height);
gtk_cell_renderer_get_fixed_size (GTK_CELL_RENDERER (cell), NULL, &height);
if (height < 0)
{
klass = GTK_CELL_RENDERER_GET_CLASS (cell);
klass->get_preferred_height_for_width (cell, widget, width, minimum_height, natural_height);
}
else
{
if (minimum_height)
*minimum_height = height;
if (natural_height)
*natural_height = height;
}
#if DEBUG_CELL_SIZE_REQUEST
g_message ("%s height for width: %d is minimum %d and natural: %d",
G_OBJECT_TYPE_NAME (cell), width,
minimum_height ? *minimum_height : 20000,
natural_height ? *natural_height : 20000);
#endif
}
/**
* gtk_cell_renderer_get_preferred_size:
* @cell: a `GtkCellRenderer` instance
* @widget: the `GtkWidget` this cell will be rendering to
* @minimum_size: (out) (optional): location for storing the minimum size
* @natural_size: (out) (optional): location for storing the natural size
*
* Retrieves the minimum and natural size of a cell taking
* into account the widget’s preference for height-for-width management.
*/
void
gtk_cell_renderer_get_preferred_size (GtkCellRenderer *cell,
GtkWidget *widget,
GtkRequisition *minimum_size,
GtkRequisition *natural_size)
{
int min_width, nat_width;
int min_height, nat_height;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
if (gtk_cell_renderer_get_request_mode (cell) == GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH)
{
gtk_cell_renderer_get_preferred_width (cell, widget, &min_width, &nat_width);
if (minimum_size)
{
minimum_size->width = min_width;
gtk_cell_renderer_get_preferred_height_for_width (cell, widget, min_width,
&minimum_size->height, NULL);
}
if (natural_size)
{
natural_size->width = nat_width;
gtk_cell_renderer_get_preferred_height_for_width (cell, widget, nat_width,
NULL, &natural_size->height);
}
}
else /* GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT */
{
gtk_cell_renderer_get_preferred_height (cell, widget, &min_height, &nat_height);
if (minimum_size)
{
minimum_size->height = min_height;
gtk_cell_renderer_get_preferred_width_for_height (cell, widget, min_height,
&minimum_size->width, NULL);
}
if (natural_size)
{
natural_size->height = nat_height;
gtk_cell_renderer_get_preferred_width_for_height (cell, widget, nat_height,
NULL, &natural_size->width);
}
}
}
/**
* gtk_cell_renderer_get_aligned_area:
* @cell: a `GtkCellRenderer` instance
* @widget: the `GtkWidget` this cell will be rendering to
* @flags: render flags
* @cell_area: cell area which would be passed to gtk_cell_renderer_render()
* @aligned_area: (out): the return location for the space inside @cell_area
* that would actually be used to render.
*
* Gets the aligned area used by @cell inside @cell_area. Used for finding
* the appropriate edit and focus rectangle.
*/
void
gtk_cell_renderer_get_aligned_area (GtkCellRenderer *cell,
GtkWidget *widget,
GtkCellRendererState flags,
const GdkRectangle *cell_area,
GdkRectangle *aligned_area)
{
GtkCellRendererClass *klass;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (cell_area != NULL);
g_return_if_fail (aligned_area != NULL);
klass = GTK_CELL_RENDERER_GET_CLASS (cell);
klass->get_aligned_area (cell, widget, flags, cell_area, aligned_area);
g_assert (aligned_area->x >= cell_area->x && aligned_area->x <= cell_area->x + cell_area->width);
g_assert (aligned_area->y >= cell_area->y && aligned_area->y <= cell_area->y + cell_area->height);
g_assert ((aligned_area->x - cell_area->x) + aligned_area->width <= cell_area->width);
g_assert ((aligned_area->y - cell_area->y) + aligned_area->height <= cell_area->height);
}
/**
* gtk_cell_renderer_get_state:
* @cell: (nullable): a `GtkCellRenderer`
* @widget: (nullable): a `GtkWidget`
* @cell_state: cell renderer state
*
* Translates the cell renderer state to `GtkStateFlags`,
* based on the cell renderer and widget sensitivity, and
* the given `GtkCellRenderer`State.
*
* Returns: the widget state flags applying to @cell
**/
GtkStateFlags
gtk_cell_renderer_get_state (GtkCellRenderer *cell,
GtkWidget *widget,
GtkCellRendererState cell_state)
{
GtkStateFlags state = 0;
g_return_val_if_fail (!cell || GTK_IS_CELL_RENDERER (cell), 0);
g_return_val_if_fail (!widget || GTK_IS_WIDGET (widget), 0);
if (widget)
state |= gtk_widget_get_state_flags (widget);
state &= ~(GTK_STATE_FLAG_FOCUSED | GTK_STATE_FLAG_PRELIGHT | GTK_STATE_FLAG_SELECTED | GTK_STATE_FLAG_DROP_ACTIVE);
if ((state & GTK_STATE_FLAG_INSENSITIVE) != 0 ||
(cell && !gtk_cell_renderer_get_sensitive (cell)) ||
(cell_state & GTK_CELL_RENDERER_INSENSITIVE) != 0)
{
state |= GTK_STATE_FLAG_INSENSITIVE;
}
else
{
if ((widget && gtk_widget_has_focus (widget)) &&
(cell_state & GTK_CELL_RENDERER_FOCUSED) != 0)
state |= GTK_STATE_FLAG_FOCUSED;
if ((cell_state & GTK_CELL_RENDERER_PRELIT) != 0)
state |= GTK_STATE_FLAG_PRELIGHT;
}
if ((cell_state & GTK_CELL_RENDERER_SELECTED) != 0)
state |= GTK_STATE_FLAG_SELECTED;
return state;
}
/**
* gtk_cell_renderer_set_is_expander:
* @cell: a `GtkCellRenderer`
* @is_expander: whether @cell is an expander
*
* Sets whether the given `GtkCellRenderer` is an expander.
*/
void
gtk_cell_renderer_set_is_expander (GtkCellRenderer *cell,
gboolean is_expander)
{
GtkCellRendererPrivate *priv = gtk_cell_renderer_get_instance_private (cell);
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
is_expander = !!is_expander;
if (is_expander != priv->is_expander)
{
priv->is_expander = is_expander;
g_object_notify (G_OBJECT (cell), "is-expander");
}
}
/**
* gtk_cell_renderer_get_is_expander:
* @cell: a `GtkCellRenderer`
*
* Checks whether the given `GtkCellRenderer` is an expander.
*
* Returns: %TRUE if @cell is an expander, and %FALSE otherwise
*/
gboolean
gtk_cell_renderer_get_is_expander (GtkCellRenderer *cell)
{
GtkCellRendererPrivate *priv = gtk_cell_renderer_get_instance_private (cell);
g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell), FALSE);
return priv->is_expander;
}
/**
* gtk_cell_renderer_set_is_expanded:
* @cell: a `GtkCellRenderer`
* @is_expanded: whether @cell should be expanded
*
* Sets whether the given `GtkCellRenderer` is expanded.
*/
void
gtk_cell_renderer_set_is_expanded (GtkCellRenderer *cell,
gboolean is_expanded)
{
GtkCellRendererPrivate *priv = gtk_cell_renderer_get_instance_private (cell);
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
is_expanded = !!is_expanded;
if (is_expanded != priv->is_expanded)
{
priv->is_expanded = is_expanded;
g_object_notify (G_OBJECT (cell), "is-expanded");
}
}
/**
* gtk_cell_renderer_get_is_expanded:
* @cell: a `GtkCellRenderer`
*
* Checks whether the given `GtkCellRenderer` is expanded.
*
* Returns: %TRUE if the cell renderer is expanded
*/
gboolean
gtk_cell_renderer_get_is_expanded (GtkCellRenderer *cell)
{
GtkCellRendererPrivate *priv = gtk_cell_renderer_get_instance_private (cell);
g_return_val_if_fail (GTK_IS_CELL_RENDERER (cell), FALSE);
return priv->is_expanded;
}
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